/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package org.apache.flink.test.recordJobs.graph.pageRankUtil;

import org.apache.flink.api.java.record.io.DelimitedOutputFormat;
import org.apache.flink.types.DoubleValue;
import org.apache.flink.types.LongValue;
import org.apache.flink.types.Record;

public class PageWithRankOutFormat extends DelimitedOutputFormat {
	private static final long serialVersionUID = 1L;

	private final StringBuilder buffer = new StringBuilder();

	@Override
	public int serializeRecord(Record record, byte[] target) {
		StringBuilder buffer = this.buffer;
		
		buffer.setLength(0);
		buffer.append(record.getField(0, LongValue.class).toString());
		buffer.append('\t');
		buffer.append(record.getField(1, DoubleValue.class).toString());
		buffer.append('\n');
		
		if (target.length < buffer.length()) {
			return -buffer.length();
		}
		
		for (int i = 0; i < buffer.length(); i++) {
			target[i] = (byte) buffer.charAt(i);
		}
		return buffer.length();
	}
}
